Sports radio listeners don’t exactly strike us as the, y’know, romantic type. If someone’s calling into a radio show to hurl invective at certain sports teams or players (none of whom will actually hear said invective, of course), odds are that their grasp on the outside world - and the women inhabiting it - is a little limited. Else, Big Fan wouldn’t ring true at all.
So when one of them actually does con a woman into spending time with them - and let’s be honest, with these people, this is a con job - their romantic instincts are still going to be stilted. Thus, you know marriage proposals are going to be… different.